diff --git a/.env.dist b/.env.dist
index 6a62259..1af9ca1 100644
--- a/.env.dist
+++ b/.env.dist
@@ -22,6 +22,7 @@ SENTRY_PROFILE_SAMPLE_RATE=1.0
 
 ###> prometheus ###
 PROMETHEUS_NAMESPACE=project-name
+PROMETHEUS_STORAGE=in-memory
 PROMETHEUS_REDIS_HOST=redis
 PROMETHEUS_REDIS_PORT=6379
 PROMETHEUS_REDIS_DATABASE=0
diff --git a/.env.test b/.env.test
new file mode 100644
index 0000000..1af9ca1
--- /dev/null
+++ b/.env.test
@@ -0,0 +1,34 @@
+# In all environments, the following files are loaded if they exist,
+# the later taking precedence over the former:
+#
+#  * .env                contains default values for the environment variables needed by the app
+#  * .env.local          uncommitted file with local overrides
+#  * .env.$APP_ENV       committed environment-specific defaults
+#  * .env.$APP_ENV.local uncommitted environment-specific overrides
+#
+# Real environment variables win over .env files.
+#
+# DO NOT DEFINE PRODUCTION SECRETS IN THIS FILE NOR IN ANY OTHER COMMITTED FILES.
+#
+# Run "composer dump-env prod" to compile .env files for production use (requires symfony/flex >=1.2).
+# https://symfony.com/doc/current/best_practices/configuration.html#infrastructure-related-configuration
+
+###> sentry ###
+SENTRY_DSN=https://KEY@INSTANCE.ingest.us.sentry.io/NAMESPACE
+SENTRY_ENVIRONMENT=${APP_ENV}
+SENTRY_TRACES_SAMPLE_RATE=1.0
+SENTRY_PROFILE_SAMPLE_RATE=1.0
+###< sentry ###
+
+###> prometheus ###
+PROMETHEUS_NAMESPACE=project-name
+PROMETHEUS_STORAGE=in-memory
+PROMETHEUS_REDIS_HOST=redis
+PROMETHEUS_REDIS_PORT=6379
+PROMETHEUS_REDIS_DATABASE=0
+PROMETHEUS_REDIS_TIMEOUT=0.1
+PROMETHEUS_REDIS_READ_TIMEOUT=10
+PROMETHEUS_REDIS_PERSISTENT_CONNECTIONS=false
+PROMETHEUS_REDIS_PASSWORD=secret
+PROMETHEUS_REDIS_URL=redis://${PROMETHEUS_REDIS_PASSWORD}@${PROMETHEUS_REDIS_HOST}
+###< prometheus ###
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..ac0022a
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,122 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - main
+      - develop
+      - 'releases/**'
+    paths-ignore:
+      - '**/*.md'
+      - '**/*.gitignore'
+      - '**/*.gitattributes'
+  
+  pull_request:
+    types:
+      - published
+      - created
+      - edited
+      - opened
+      - synchronize
+      - reopened
+    paths-ignore:
+      - '**/*.md'
+      - '**/*.gitignore'
+      - '**/*.gitattributes'
+
+jobs:
+  build:
+    name: PHP
+    runs-on: ubuntu-latest
+    
+    strategy:
+      matrix:
+        php:
+          - "8.1"
+          - "8.2"
+          - "8.3"
+        include:
+          - php-version: "8.1"
+            composer-options: "--ignore-platform-reqs"
+          - php-version: "8.2"
+            composer-options: "--ignore-platform-reqs"
+          - php-version: "8.3"
+            composer-options: "--ignore-platform-reqs"
+    
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "${{ matrix.php }}"
+          extensions: mbstring, intl
+          coverage: xdebug
+          tools: pecl, phpunit, composer
+          ini-values: post_max_size=256M
+      
+      - name: Setup composer
+        uses: ramsey/composer-install@v1
+        with:
+          composer-options: "${{ matrix.composer-options }}"
+      
+      - name: Validate composer files
+        run: composer validate
+      
+      - name: Cache composer packages
+        id: composer-cache
+        uses: actions/cache@v3
+        with:
+          path: vendor
+          key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-php-
+      
+      - name: Install dependencies
+        if: steps.composer-cache.outputs.cache-hit != 'true'
+        run: composer update --prefer-dist --no-progress
+      
+      - name: Setup tests directories
+        run: mkdir -p build/logs
+      
+      - name: Execute unit tests
+        run: ./vendor/bin/pest --colors=always --configuration phpunit.xml.dist --coverage-cobertura tests-cobertura.xml --coverage-clover tests-coverage.xml --log-junit tests-execution.xml
+      
+      - name: Prepare coverages and logs
+        run: cp tests-coverage.xml build/logs/clover.xml && cp tests-cobertura.xml build/logs/cobertura.xml && cp tests-execution.xml build/logs/junit.xml
+      
+      - name: Push to Coveralls
+        env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          COVERALLS_PARALLEL: true
+          COVERALLS_FLAG_NAME: php-${{ matrix.php-versions }}
+        run: |
+          composer global require php-coveralls/php-coveralls
+          php-coveralls -v
+  
+  finish:
+    needs: [ build ]
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Coveralls Finished
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          parallel-finished: true
+  
+  sonarcloud:
+    name: SonarCloud
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: SonarCloud Scan
+        uses: SonarSource/sonarcloud-github-action@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
deleted file mode 100644
index ad9d1b2..0000000
--- a/.github/workflows/ci.yml
+++ /dev/null
@@ -1,84 +0,0 @@
-name: CI
-
-on:
-  push:
-    branches: [ dev-main ]
-  
-  pull_request:
-    branches: [ dev-main ]
-  
-  page_build:
-  release:
-    types: [ published, created, edited ]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    
-    strategy:
-      matrix:
-        php:
-        - "8.1"
-        include:
-        - php-version: "8.1"
-          composer-options: "--ignore-platform-reqs"
-    
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v2
-    
-    - name: Setup PHP
-      uses: shivammathur/setup-php@v2
-      with:
-        php-version: "${{ matrix.php }}"
-        extensions: mbstring, intl
-        coverage: xdebug
-        tools: pecl, phpunit, composer
-        ini-values: post_max_size=256M
-    
-    - name: Setup Composer
-      uses: ramsey/composer-install@v1
-      with:
-        composer-options: "${{ matrix.composer-options }}"
-    
-    - name: Validate composer.json and composer.lock
-      run: composer validate
-    
-    - name: Cache Composer packages
-      id: composer-cache
-      uses: actions/cache@v2
-      with:
-        path: vendor
-        key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
-        restore-keys: |
-          ${{ runner.os }}-php-
-    
-    - name: Install dependencies
-      if: steps.composer-cache.outputs.cache-hit != 'true'
-      run: composer update --prefer-dist --no-progress
-    
-    - name: Setup tests directories
-      run:  mkdir -p build/logs
-    
-    - name: Unit Tests
-      run: ./vendor/bin/phpunit --colors=always --configuration phpunit.xml.dist
-    
-    - name: Push to Coveralls
-      env:
-        COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        COVERALLS_PARALLEL: true
-        COVERALLS_FLAG_NAME: php-${{ matrix.php-versions }}
-      run: |
-        composer global require php-coveralls/php-coveralls
-        php-coveralls -v
-  
-  finish:
-    needs: [ build ]
-    runs-on: ubuntu-18.04
-
-    steps:
-    - name: Coveralls Finished
-      uses: coverallsapp/github-action@master
-      with:
-        github-token: ${{ secrets.GITHUB_TOKEN }}
-        parallel-finished: true
diff --git a/.scrutinizer.yml b/.scrutinizer.yml
index 0033992..202cb73 100644
--- a/.scrutinizer.yml
+++ b/.scrutinizer.yml
@@ -4,9 +4,9 @@ build:
       tests:
         override:
           - php-scrutinizer-run
-
+  
   environment:
-    php: 8.1.9
+    php: 8.2
 
 filter:
   excluded_paths:
diff --git a/EventListener/Prometheus/AbstractMetricsWorkerEventSubscriber.php b/EventListener/Prometheus/AbstractMetricsWorkerEventSubscriber.php
deleted file mode 100644
index cfd9f58..0000000
--- a/EventListener/Prometheus/AbstractMetricsWorkerEventSubscriber.php
+++ /dev/null
@@ -1,70 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- *
- * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
- *
- * For the full copyright and license information, please view the LICENSE.MD
- * file that was distributed with this source code.
- */
-
-namespace FRZB\Component\MetricsPower\EventListener\Prometheus;
-
-use Prometheus\Exception\MetricsRegistrationException;
-use Prometheus\RegistryInterface;
-use Psr\Log\LoggerInterface;
-use Symfony\Component\EventDispatcher\EventSubscriberInterface;
-use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
-use Symfony\Component\Messenger\Event\WorkerMessageHandledEvent;
-use Symfony\Component\Messenger\Event\WorkerMessageReceivedEvent;
-
-abstract class AbstractMetricsWorkerEventSubscriber implements EventSubscriberInterface
-{
-    public function __construct(
-        private readonly string $namespace,
-        private readonly RegistryInterface $registry,
-        private readonly LoggerInterface $logger
-    ) {}
-
-    public static function getSubscribedEvents(): array
-    {
-        return [
-            WorkerMessageReceivedEvent::class => 'onWorkerMessageReceivedEvent',
-            WorkerMessageHandledEvent::class => 'onWorkerMessageHandledEvent',
-            WorkerMessageFailedEvent::class => 'onWorkerMessageFailedEvent',
-        ];
-    }
-
-    abstract public function onWorkerMessageReceivedEvent(WorkerMessageReceivedEvent $event): void;
-
-    abstract public function onWorkerMessageHandledEvent(WorkerMessageHandledEvent $event): void;
-
-    abstract public function onWorkerMessageFailedEvent(WorkerMessageFailedEvent $event): void;
-
-    protected function incrementRegistryCounter(string $worker, string $name, string $help, array $labels, array $values): void
-    {
-        $counterName = str_replace('-', '_', sprintf('%s_%s', $worker, $name));
-
-        try {
-            $this->registry
-                ->getOrRegisterCounter($this->namespace, $counterName, $help, $labels)
-                ->inc($values)
-            ;
-        } catch (MetricsRegistrationException $e) {
-            $this->logError($e);
-        }
-    }
-
-    private function logError(MetricsRegistrationException $e): void
-    {
-        $this->logger->error(
-            'Metrics registration failed, reason: {message}',
-            ['message' => $e->getMessage(), 'trace' => $e->getTrace()]
-        );
-    }
-}
diff --git a/EventListener/Prometheus/OnMessageFailedEventListener.php b/EventListener/Prometheus/OnMessageFailedEventListener.php
deleted file mode 100644
index 2f4f8e7..0000000
--- a/EventListener/Prometheus/OnMessageFailedEventListener.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- *
- * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
- *
- * For the full copyright and license information, please view the LICENSE.MD
- * file that was distributed with this source code.
- */
-
-namespace FRZB\Component\MetricsPower\EventListener\Prometheus;
-
-use FRZB\Component\MetricsPower\Enum\ListenerPriority;
-use FRZB\Component\MetricsPower\Handler\MetricsHandlerInterface;
-use Symfony\Component\EventDispatcher\Attribute\AsEventListener;
-use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
-
-#[AsEventListener(WorkerMessageFailedEvent::class, priority: ListenerPriority::HIGHEST)]
-final class OnMessageFailedEventListener
-{
-    public function __construct(
-        private readonly MetricsHandlerInterface $handler,
-    ) {}
-
-    public function __invoke(WorkerMessageFailedEvent $event): void
-    {
-        $this->handler->handle($event);
-    }
-}
diff --git a/EventListener/Prometheus/OnMessageHandledEventListener.php b/EventListener/Prometheus/OnMessageHandledEventListener.php
deleted file mode 100644
index d38e917..0000000
--- a/EventListener/Prometheus/OnMessageHandledEventListener.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- *
- * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
- *
- * For the full copyright and license information, please view the LICENSE.MD
- * file that was distributed with this source code.
- */
-
-namespace FRZB\Component\MetricsPower\EventListener\Prometheus;
-
-use FRZB\Component\MetricsPower\Enum\ListenerPriority;
-use FRZB\Component\MetricsPower\Handler\MetricsHandlerInterface;
-use Symfony\Component\EventDispatcher\Attribute\AsEventListener;
-use Symfony\Component\Messenger\Event\WorkerMessageHandledEvent;
-
-#[AsEventListener(WorkerMessageHandledEvent::class, priority: ListenerPriority::HIGHEST)]
-final class OnMessageHandledEventListener
-{
-    public function __construct(
-        private readonly MetricsHandlerInterface $handler,
-    ) {}
-
-    public function __invoke(WorkerMessageHandledEvent $event): void
-    {
-        $this->handler->handle($event);
-    }
-}
diff --git a/EventListener/Prometheus/OnMessageReceivedEventListener.php b/EventListener/Prometheus/OnMessageReceivedEventListener.php
deleted file mode 100644
index 91b2009..0000000
--- a/EventListener/Prometheus/OnMessageReceivedEventListener.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- *
- * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
- *
- * For the full copyright and license information, please view the LICENSE.MD
- * file that was distributed with this source code.
- */
-
-namespace FRZB\Component\MetricsPower\EventListener\Prometheus;
-
-use FRZB\Component\MetricsPower\Enum\ListenerPriority;
-use FRZB\Component\MetricsPower\Handler\MetricsHandlerInterface;
-use Symfony\Component\EventDispatcher\Attribute\AsEventListener;
-use Symfony\Component\Messenger\Event\WorkerMessageReceivedEvent;
-
-#[AsEventListener(WorkerMessageReceivedEvent::class, priority: ListenerPriority::HIGHEST)]
-final class OnMessageReceivedEventListener
-{
-    public function __construct(
-        private readonly MetricsHandlerInterface $handler,
-    ) {}
-
-    public function __invoke(WorkerMessageReceivedEvent $event): void
-    {
-        $this->handler->handle($event);
-    }
-}
diff --git a/EventListener/Prometheus/OnMessageRetriedEventListener.php b/EventListener/Prometheus/OnMessageRetriedEventListener.php
deleted file mode 100644
index e5d266c..0000000
--- a/EventListener/Prometheus/OnMessageRetriedEventListener.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- *
- * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
- *
- * For the full copyright and license information, please view the LICENSE.MD
- * file that was distributed with this source code.
- */
-
-namespace FRZB\Component\MetricsPower\EventListener\Prometheus;
-
-use FRZB\Component\MetricsPower\Enum\ListenerPriority;
-use FRZB\Component\MetricsPower\Handler\MetricsHandlerInterface;
-use Symfony\Component\EventDispatcher\Attribute\AsEventListener;
-use Symfony\Component\Messenger\Event\WorkerMessageRetriedEvent;
-
-#[AsEventListener(WorkerMessageRetriedEvent::class, priority: ListenerPriority::HIGHEST)]
-final class OnMessageRetriedEventListener
-{
-    public function __construct(
-        private readonly MetricsHandlerInterface $handler,
-    ) {}
-
-    public function __invoke(WorkerMessageRetriedEvent $event): void
-    {
-        $this->handler->handle($event);
-    }
-}
diff --git a/EventListener/Prometheus/OnMessageSendEventListener.php b/EventListener/Prometheus/OnWorkerMessageEventListener.php
similarity index 55%
rename from EventListener/Prometheus/OnMessageSendEventListener.php
rename to EventListener/Prometheus/OnWorkerMessageEventListener.php
index bd63932..84def52 100644
--- a/EventListener/Prometheus/OnMessageSendEventListener.php
+++ b/EventListener/Prometheus/OnWorkerMessageEventListener.php
@@ -18,16 +18,25 @@
 use FRZB\Component\MetricsPower\Enum\ListenerPriority;
 use FRZB\Component\MetricsPower\Handler\MetricsHandlerInterface;
 use Symfony\Component\EventDispatcher\Attribute\AsEventListener;
+use Symfony\Component\Messenger\Event\AbstractWorkerMessageEvent;
 use Symfony\Component\Messenger\Event\SendMessageToTransportsEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageHandledEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageReceivedEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageRetriedEvent;
 
+#[AsEventListener(WorkerMessageFailedEvent::class, priority: ListenerPriority::HIGHEST)]
+#[AsEventListener(WorkerMessageHandledEvent::class, priority: ListenerPriority::HIGHEST)]
+#[AsEventListener(WorkerMessageReceivedEvent::class, priority: ListenerPriority::HIGHEST)]
+#[AsEventListener(WorkerMessageRetriedEvent::class, priority: ListenerPriority::HIGHEST)]
 #[AsEventListener(SendMessageToTransportsEvent::class, priority: ListenerPriority::HIGHEST)]
-final class OnMessageSendEventListener
+final class OnWorkerMessageEventListener
 {
     public function __construct(
         private readonly MetricsHandlerInterface $handler,
     ) {}
 
-    public function __invoke(SendMessageToTransportsEvent $event): void
+    public function __invoke(AbstractWorkerMessageEvent|SendMessageToTransportsEvent $event): void
     {
         $this->handler->handle($event);
     }
diff --git a/Factory/Exception/NotSupportedStorageAdapterException.php b/Factory/Exception/NotSupportedStorageAdapterException.php
index 43ff343..7769da9 100644
--- a/Factory/Exception/NotSupportedStorageAdapterException.php
+++ b/Factory/Exception/NotSupportedStorageAdapterException.php
@@ -15,8 +15,6 @@
 
 namespace FRZB\Component\MetricsPower\Factory\Exception;
 
-use FRZB\Component\MetricsPower\Exception\MetricsPowerException;
-
 final class NotSupportedStorageAdapterException extends StorageAdapterFactoryException
 {
     private const MESSAGE_NOT_SUPPORTED_STORAGE = 'Storage type "%s" is not supported';
diff --git a/Factory/Exception/StorageAdapterFactoryException.php b/Factory/Exception/StorageAdapterFactoryException.php
index 2f9c7e0..57be72b 100644
--- a/Factory/Exception/StorageAdapterFactoryException.php
+++ b/Factory/Exception/StorageAdapterFactoryException.php
@@ -2,12 +2,19 @@
 
 declare(strict_types=1);
 
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
 
 namespace FRZB\Component\MetricsPower\Factory\Exception;
 
-
 use FRZB\Component\MetricsPower\Exception\MetricsPowerException;
 
-abstract class StorageAdapterFactoryException extends MetricsPowerException
-{
-}
\ No newline at end of file
+abstract class StorageAdapterFactoryException extends MetricsPowerException {}
diff --git a/Factory/PrometheusStorageAdapterFactory.php b/Factory/PrometheusStorageAdapterFactory.php
index 6a022a8..c3d7f77 100644
--- a/Factory/PrometheusStorageAdapterFactory.php
+++ b/Factory/PrometheusStorageAdapterFactory.php
@@ -2,12 +2,14 @@
 
 declare(strict_types=1);
 
-/*
- * UnBlocker service for routers.
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  *
- * (c) Mykhailo Shtanko <fractalzombie@gmail.com>
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
  *
- * For the full copyright and license information, please view the LICENSE
+ * For the full copyright and license information, please view the LICENSE.MD
  * file that was distributed with this source code.
  */
 
@@ -40,7 +42,7 @@ public static function createStorageAdapter(array $configuration): Adapter
     /** @throws NotSupportedStorageAdapterException */
     private static function getStorageType(array $configuration): StorageType
     {
-        $storage = $configuration['storage'] ?? null;
+        $storage = $configuration['storage'] ?? StorageType::InMemory->value;
 
         return StorageType::tryFrom($storage) ?? throw NotSupportedStorageAdapterException::fromStorageType($storage);
     }
diff --git a/Factory/PrometheusStorageAdapterFactoryInterface.php b/Factory/PrometheusStorageAdapterFactoryInterface.php
index 67b6768..17a0665 100644
--- a/Factory/PrometheusStorageAdapterFactoryInterface.php
+++ b/Factory/PrometheusStorageAdapterFactoryInterface.php
@@ -2,10 +2,19 @@
 
 declare(strict_types=1);
 
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
 
 namespace FRZB\Component\MetricsPower\Factory;
 
-
 use FRZB\Component\MetricsPower\Factory\Exception\StorageAdapterFactoryException;
 use Prometheus\Storage\Adapter;
 
@@ -13,4 +22,4 @@ interface PrometheusStorageAdapterFactoryInterface
 {
     /** @throws StorageAdapterFactoryException */
     public static function createStorageAdapter(array $configuration): Adapter;
-}
\ No newline at end of file
+}
diff --git a/Helper/EnvelopeHelper.php b/Helper/EnvelopeHelper.php
index 2b09301..85402fe 100644
--- a/Helper/EnvelopeHelper.php
+++ b/Helper/EnvelopeHelper.php
@@ -25,6 +25,7 @@
 final class EnvelopeHelper
 {
     use WithEmptyPrivateConstructor;
+
     public static function wrap(object $message): Envelope
     {
         $envelope = Envelope::wrap($message);
diff --git a/Helper/MetricalHelper.php b/Helper/MetricalHelper.php
index afea98e..206a3aa 100644
--- a/Helper/MetricalHelper.php
+++ b/Helper/MetricalHelper.php
@@ -38,6 +38,14 @@ public static function getMetrical(object|string $target): array
         return AttributeHelper::getAttributes($target, Metrical::class);
     }
 
+    public static function getFirstMetrical(object|string $target): ?Metrical
+    {
+        return ArrayList::collect(self::getMetrical($target))
+            ->firstElement()
+            ->get()
+        ;
+    }
+
     /** @return array<Option> */
     public static function getOptions(object|string $target): array
     {
diff --git a/OptionResolver/OptionResolverLocator.php b/OptionResolver/OptionResolverLocator.php
index 501478a..33bba2c 100644
--- a/OptionResolver/OptionResolverLocator.php
+++ b/OptionResolver/OptionResolverLocator.php
@@ -18,7 +18,6 @@
 use Fp\Collections\HashMap;
 use FRZB\Component\DependencyInjection\Attribute\AsService;
 use FRZB\Component\MetricsPower\Attribute\OptionsInterface;
-use FRZB\Component\MetricsPower\OptionResolver\Resolver\DefaultOptionResolver;
 use FRZB\Component\MetricsPower\OptionResolver\Resolver\OptionResolverInterface;
 use Symfony\Component\DependencyInjection\Attribute\TaggedIterator;
 
@@ -38,6 +37,6 @@ public function __construct(
     public function get(OptionsInterface $option): OptionResolverInterface
     {
         return $this->resolvers->get($option::class)->get()
-            ?? $this->resolvers->get(DefaultOptionResolver::class)->getUnsafe();
+            ?? $this->resolvers->get(OptionsInterface::class)->getUnsafe();
     }
 }
diff --git a/OptionResolver/Resolver/DefaultOptionResolver.php b/OptionResolver/Resolver/DefaultOptionResolver.php
index d477f37..febc67e 100644
--- a/OptionResolver/Resolver/DefaultOptionResolver.php
+++ b/OptionResolver/Resolver/DefaultOptionResolver.php
@@ -2,25 +2,28 @@
 
 declare(strict_types=1);
 
-/*
- * UnBlocker service for routers.
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  *
- * (c) Mykhailo Shtanko <fractalzombie@gmail.com>
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
  *
- * For the full copyright and license information, please view the LICENSE
+ * For the full copyright and license information, please view the LICENSE.MD
  * file that was distributed with this source code.
  */
 
 namespace FRZB\Component\MetricsPower\OptionResolver\Resolver;
 
-use FRZB\Component\DependencyInjection\Attribute\AsIgnored;
 use FRZB\Component\DependencyInjection\Attribute\AsService;
+use FRZB\Component\DependencyInjection\Attribute\AsTagged;
 use FRZB\Component\MetricsPower\Attribute\OptionsInterface;
 use FRZB\Component\MetricsPower\Logger\MetricsPowerLoggerInterface;
 use Symfony\Component\Messenger\Event\AbstractWorkerMessageEvent;
 use Symfony\Component\Messenger\Event\SendMessageToTransportsEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
 
-#[AsService]
+#[AsService, AsTagged(OptionResolverInterface::class)]
 class DefaultOptionResolver implements OptionResolverInterface
 {
     public function __construct(
@@ -29,7 +32,10 @@ public function __construct(
 
     public function __invoke(AbstractWorkerMessageEvent|SendMessageToTransportsEvent $event, OptionsInterface $options): void
     {
-        $this->logger->logInfo($event, $options);
+        match ($event::class) {
+            WorkerMessageFailedEvent::class => $this->logger->logError($event, $options, $event->getThrowable()),
+            default => $this->logger->logInfo($event, $options),
+        };
     }
 
     public static function getType(): string
diff --git a/README.md b/README.md
index f3599fc..5820d9d 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,11 @@ Metrics Power Component
 =============================
 
 ![Workflow Build Status](https://github.com/fractalzombie/frzb-metrics-power/actions/workflows/ci.yml/badge.svg?event=push)
+[![Coverage Status](https://coveralls.io/repos/github/fractalzombie/frzb-metrics-power/badge.svg?branch=main)](https://coveralls.io/github/fractalzombie/frzb-metrics-power?branch=main)
+[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=fractalzombie_frzb-metrics-power&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=fractalzombie_frzb-metrics-power)
+[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/fractalzombie/frzb-metrics-power/badges/quality-score.png?b=main)](https://scrutinizer-ci.com/g/fractalzombie/frzb-metrics-power/?branch=main)
+[![Build Status](https://scrutinizer-ci.com/g/fractalzombie/frzb-metrics-power/badges/build.png?b=main)](https://scrutinizer-ci.com/g/fractalzombie/frzb-metrics-power/build-status/main)
+[![Code Intelligence Status](https://scrutinizer-ci.com/g/fractalzombie/frzb-metrics-power/badges/code-intelligence.svg?b=main)](https://scrutinizer-ci.com/code-intelligence)
 
 The `Metrics Power Component` allows make your application able to metric
 
@@ -48,3 +53,5 @@ final class CreateUserMessage {
 Resources
 ---------
 * [License](https://github.com/fractalzombie/frzb-metrics-power/blob/main/LICENSE.md)
+
+![Alt](https://repobeats.axiom.co/api/embed/854420235662fb76f86b6e5c72b4eb083185916e.svg "Metrics Power Component")
diff --git a/Resources/config/metrics_power.yaml b/Resources/config/metrics_power.yaml
index 0e14b32..11d6283 100644
--- a/Resources/config/metrics_power.yaml
+++ b/Resources/config/metrics_power.yaml
@@ -3,7 +3,7 @@ metrics_power:
     dsn: '%env(resolve:SENTRY_DSN)%'
     environment: '%env(resolve:SENTRY_ENVIRONMENT)%'
   prometheus:
-    storage: 'in_memory'
+    storage: '%env(string:PROMETHEUS_STORAGE)%'
     redis:
       host: '%env(string:PROMETHEUS_REDIS_HOST)%'
       port: '%env(int:PROMETHEUS_REDIS_PORT)%'
diff --git a/Tests/Dump/AttributeHelperTest.php b/Tests/Dump/AttributeHelperTest.php
new file mode 100644
index 0000000..477e6e8
--- /dev/null
+++ b/Tests/Dump/AttributeHelperTest.php
@@ -0,0 +1,108 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+// declare(strict_types=1);
+//
+// /**
+// * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// *
+// * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+// *
+// * For the full copyright and license information, please view the LICENSE.MD
+// * file that was distributed with this source code.
+// */
+//
+// namespace FRZB\Component\MetricsPower\Tests\Unit\Dump;
+//
+// use FRZB\Component\MetricsPower\Attribute\Transactional;
+// use FRZB\Component\MetricsPower\Helper\AttributeHelper;
+// use FRZB\Component\MetricsPower\Helper\ClassHelper;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\ExtendedTransactionalMessage;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\NonTransactionalMessage;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnHandledMessage;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnResponseMessage;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnTerminateMessage;
+// use PHPUnit\Framework\Attributes\DataProvider;
+// use PHPUnit\Framework\Attributes\Group;
+// use PHPUnit\Framework\TestCase;
+//
+// /** @iternal */
+// #[Group('transactional-messenger')]
+// final class AttributeHelperTest extends TestCase
+// {
+//    #[DataProvider('dataProvider')]
+//    public function testGetAttributesMethod(string $className, bool $hasAttributes): void
+//    {
+//        $hasAttributes
+//            ? self::assertNotEmpty(AttributeHelper::getAttributes($className, Transactional::class))
+//            : self::assertEmpty(AttributeHelper::getAttributes($className, Transactional::class));
+//    }
+//
+//    #[DataProvider('dataProvider')]
+//    public function testGetAttributeMethod(string $className, bool $hasAttributes): void
+//    {
+//        $hasAttributes
+//            ? self::assertNotNull(AttributeHelper::getAttribute($className, Transactional::class))
+//            : self::assertNull(AttributeHelper::getAttribute($className, Transactional::class));
+//    }
+//
+//    #[DataProvider('dataProvider')]
+//    public function testGetReflectionAttributesMethod(string $className, bool $hasAttributes): void
+//    {
+//        $hasAttributes
+//            ? self::assertNotEmpty(AttributeHelper::getReflectionAttributes($className, Transactional::class))
+//            : self::assertEmpty(AttributeHelper::getReflectionAttributes($className, Transactional::class));
+//    }
+//
+//    #[DataProvider('dataProvider')]
+//    public function testHasAttributeMethod(string $className, bool $hasAttributes): void
+//    {
+//        self::assertSame($hasAttributes, AttributeHelper::hasAttribute($className, Transactional::class));
+//    }
+//
+//    public static function dataProvider(): iterable
+//    {
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
+//            'class_name' => TransactionalOnTerminateMessage::class,
+//            'has_attributes' => true,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
+//            'class_name' => TransactionalOnResponseMessage::class,
+//            'has_attributes' => true,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
+//            'class_name' => TransactionalOnHandledMessage::class,
+//            'has_attributes' => true,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(ExtendedTransactionalMessage::class)) => [
+//            'class_name' => ExtendedTransactionalMessage::class,
+//            'has_attributes' => true,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
+//            'class_name' => NonTransactionalMessage::class,
+//            'has_attributes' => false,
+//        ];
+//
+//        yield 'InvalidClassName' => [
+//            'class_name' => 'InvalidClassName',
+//            'has_attributes' => false,
+//        ];
+//    }
+// }
diff --git a/Tests/Dump/ClassHelperTest.php b/Tests/Dump/ClassHelperTest.php
new file mode 100644
index 0000000..757a5db
--- /dev/null
+++ b/Tests/Dump/ClassHelperTest.php
@@ -0,0 +1,201 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+// declare(strict_types=1);
+//
+// /**
+// * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// *
+// * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+// *
+// * For the full copyright and license information, please view the LICENSE.MD
+// * file that was distributed with this source code.
+// */
+//
+// namespace FRZB\Component\MetricsPower\Tests\Unit\Dump;
+//
+// use FRZB\Component\MetricsPower\Attribute\Transactional;
+// use FRZB\Component\MetricsPower\Helper\ClassHelper;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\ExtendedTransactionalMessage;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\NonTransactionalMessage;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnHandledMessage;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnResponseMessage;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnTerminateMessage;
+// use PHPUnit\Framework\Attributes\DataProvider;
+// use PHPUnit\Framework\Attributes\Group;
+// use PHPUnit\Framework\TestCase;
+//
+// /** @iternal */
+// #[Group('transactional-messenger')]
+// final class ClassHelperTest extends TestCase
+// {
+//    #[DataProvider('shortNameProvider')]
+//    public function testGetShortNameMethod(string $className, string $shortClassName): void
+//    {
+//        self::assertSame($shortClassName, ClassHelper::getShortName($className));
+//    }
+//
+//    #[DataProvider('reflectionProvider')]
+//    public function testGetReflectionClassMethod(string $className, bool $isNull): void
+//    {
+//        $isNull
+//            ? self::assertNull(ClassHelper::getReflectionClass($className))
+//            : self::assertNotNull(ClassHelper::getReflectionClass($className));
+//    }
+//
+//    #[DataProvider('parentReflectionProvider')]
+//    public function testGetParentReflectionClassMethod(string $className, bool $isNull): void
+//    {
+//        $isNull
+//            ? self::assertNull(ClassHelper::getParentReflectionClass($className))
+//            : self::assertNotNull(ClassHelper::getParentReflectionClass($className));
+//    }
+//
+//    #[DataProvider('reflectionAttributesProvider')]
+//    public function testGetReflectionAttributesClassMethod(string $className, bool $isEmpty): void
+//    {
+//        $isEmpty
+//            ? self::assertEmpty(ClassHelper::getReflectionAttributes($className, Transactional::class))
+//            : self::assertNotEmpty(ClassHelper::getReflectionAttributes($className, Transactional::class));
+//    }
+//
+//    public function shortNameProvider(): iterable
+//    {
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
+//            'class_name' => TransactionalOnTerminateMessage::class,
+//            'short_class_name' => 'TransactionalOnTerminateMessage',
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
+//            'class_name' => TransactionalOnResponseMessage::class,
+//            'short_class_name' => 'TransactionalOnResponseMessage',
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
+//            'class_name' => TransactionalOnHandledMessage::class,
+//            'short_class_name' => 'TransactionalOnHandledMessage',
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
+//            'class_name' => NonTransactionalMessage::class,
+//            'short_class_name' => 'NonTransactionalMessage',
+//        ];
+//
+//        yield 'InvalidClassName' => [
+//            'class_name' => 'InvalidClassName',
+//            'short_class_name' => 'InvalidClassName',
+//        ];
+//    }
+//
+//    public function reflectionProvider(): iterable
+//    {
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
+//            'class_name' => TransactionalOnTerminateMessage::class,
+//            'is_null' => false,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
+//            'class_name' => TransactionalOnResponseMessage::class,
+//            'is_null' => false,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
+//            'class_name' => TransactionalOnHandledMessage::class,
+//            'is_null' => false,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(ExtendedTransactionalMessage::class)) => [
+//            'class_name' => ExtendedTransactionalMessage::class,
+//            'is_null' => false,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
+//            'class_name' => NonTransactionalMessage::class,
+//            'is_null' => false,
+//        ];
+//
+//        yield 'InvalidClassName' => [
+//            'class_name' => 'InvalidClassName',
+//            'is_null' => true,
+//        ];
+//    }
+//
+//    public function parentReflectionProvider(): iterable
+//    {
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
+//            'class_name' => TransactionalOnTerminateMessage::class,
+//            'is_null' => true,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
+//            'class_name' => TransactionalOnResponseMessage::class,
+//            'is_null' => true,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
+//            'class_name' => TransactionalOnHandledMessage::class,
+//            'is_null' => true,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(ExtendedTransactionalMessage::class)) => [
+//            'class_name' => ExtendedTransactionalMessage::class,
+//            'is_null' => false,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
+//            'class_name' => NonTransactionalMessage::class,
+//            'is_null' => true,
+//        ];
+//
+//        yield 'InvalidClassName' => [
+//            'class_name' => 'InvalidClassName',
+//            'is_null' => true,
+//        ];
+//    }
+//
+//    public function reflectionAttributesProvider(): iterable
+//    {
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
+//            'class_name' => TransactionalOnTerminateMessage::class,
+//            'is_empty' => false,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
+//            'class_name' => TransactionalOnResponseMessage::class,
+//            'is_empty' => false,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
+//            'class_name' => TransactionalOnHandledMessage::class,
+//            'is_empty' => false,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(ExtendedTransactionalMessage::class)) => [
+//            'class_name' => ExtendedTransactionalMessage::class,
+//            'is_empty' => true,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
+//            'class_name' => NonTransactionalMessage::class,
+//            'is_empty' => true,
+//        ];
+//
+//        yield 'InvalidClassName' => [
+//            'class_name' => 'InvalidClassName',
+//            'is_empty' => true,
+//        ];
+//    }
+// }
diff --git a/Tests/Dump/EnvelopeHelperTest.php b/Tests/Dump/EnvelopeHelperTest.php
new file mode 100644
index 0000000..8789c18
--- /dev/null
+++ b/Tests/Dump/EnvelopeHelperTest.php
@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+// declare(strict_types=1);
+//
+// /**
+// * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// *
+// * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+// *
+// * For the full copyright and license information, please view the LICENSE.MD
+// * file that was distributed with this source code.
+// */
+//
+// namespace FRZB\Component\MetricsPower\Tests\Unit\Dump;
+//
+// use FRZB\Component\MetricsPower\Helper\ClassHelper;
+// use FRZB\Component\MetricsPower\Helper\EnvelopeHelper;
+// use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnTerminateMessage;
+// use PHPUnit\Framework\Attributes\DataProvider;
+// use PHPUnit\Framework\Attributes\Group;
+// use PHPUnit\Framework\TestCase;
+// use Symfony\Component\Messenger\Envelope;
+// use Symfony\Component\Messenger\Stamp\DispatchAfterCurrentBusStamp;
+//
+// /** @iternal */
+// #[Group('transactional-messenger')]
+// final class EnvelopeHelperTest extends TestCase
+// {
+//    #[DataProvider('dataProvider')]
+//    public function testWrapMethod(object $target): void
+//    {
+//        $envelope = EnvelopeHelper::wrap($target);
+//        $messageClass = $envelope->getMessage()::class;
+//
+//        self::assertInstanceOf(Envelope::class, $envelope);
+//        self::assertSame($messageClass, $envelope->getMessage()::class);
+//        self::assertNotNull($envelope->last(DispatchAfterCurrentBusStamp::class));
+//    }
+//
+//    public function dataProvider(): iterable
+//    {
+//        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
+//            'target' => new TransactionalOnTerminateMessage(),
+//            'has_attributes' => true,
+//        ];
+//
+//        yield sprintf('%s', ClassHelper::getShortName(Envelope::class)) => [
+//            'target' => Envelope::wrap(new TransactionalOnTerminateMessage()),
+//            'has_attributes' => false,
+//        ];
+//    }
+// }
diff --git a/Tests/Feature/Kernel/EventListener/KernelExceptionEventListenerTest.php b/Tests/Feature/Kernel/EventListener/KernelExceptionEventListenerTest.php
new file mode 100644
index 0000000..d88861f
--- /dev/null
+++ b/Tests/Feature/Kernel/EventListener/KernelExceptionEventListenerTest.php
@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+
+namespace FRZB\Component\MetricsPower\Tests\Feature\Kernel\EventListener;
+
+use FRZB\Component\MetricsPower\EventListener\Kernel\KernelExceptionEventListener;
+use FRZB\Component\MetricsPower\Tests\Stub\Exception\SomethingGoesWrongException;
+use Sentry\State\HubInterface;
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Event\ExceptionEvent;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+use Symfony\Component\HttpKernel\KernelEvents;
+
+uses(KernelTestCase::class);
+
+beforeEach(function (): void {
+    $this->ensureKernelShutdown();
+    $this->bootKernel();
+});
+
+test(sprintf('Sentry captures when %s event caught', KernelEvents::EXCEPTION), function (): void {
+    $kernel = $this->createKernel();
+    $hubInterfaceMock = \Mockery::mock(HubInterface::class);
+    $hubInterfaceMock
+        ->expects('captureException')
+        ->once()
+        ->andReturnUsing(function (SomethingGoesWrongException $e): void {
+            expect($e->getMessage())->toBe('Something goes wrong');
+        })
+    ;
+
+    $this->getContainer()->set(HubInterface::class, $hubInterfaceMock);
+    $exception = SomethingGoesWrongException::wrong();
+    $event = new ExceptionEvent($kernel, Request::createFromGlobals(), HttpKernelInterface::MAIN_REQUEST, $exception);
+
+    $this->getContainer()->get(KernelExceptionEventListener::class)($event);
+});
diff --git a/Tests/Feature/Kernel/EventListener/OnWorkerMessageFailedEventListenerTest.php b/Tests/Feature/Kernel/EventListener/OnWorkerMessageFailedEventListenerTest.php
new file mode 100644
index 0000000..476e7bf
--- /dev/null
+++ b/Tests/Feature/Kernel/EventListener/OnWorkerMessageFailedEventListenerTest.php
@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+
+namespace FRZB\Component\MetricsPower\Tests\Feature\Kernel\EventListener;
+
+use FRZB\Component\MetricsPower\EventListener\Sentry\OnWorkerMessageFailedEventListener;
+use FRZB\Component\MetricsPower\Helper\EnvelopeHelper;
+use FRZB\Component\MetricsPower\Tests\Stub\Exception\SomethingGoesWrongException;
+use FRZB\Component\MetricsPower\Tests\Stub\Message\TestMessage;
+use FRZB\Component\MetricsPower\Tests\Stub\TestConstants;
+use Sentry\State\HubInterface;
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
+
+uses(KernelTestCase::class);
+
+beforeEach(function (): void {
+    $this->ensureKernelShutdown();
+    $this->bootKernel();
+});
+
+test(sprintf('Sentry captures exception when %s message failed', TestMessage::getShortName()), function (WorkerMessageFailedEvent $event): void {
+    $sentryHub = \Mockery::mock(HubInterface::class);
+    $this->getContainer()->set(HubInterface::class, $sentryHub);
+
+    if ($event->willRetry()) {
+        $sentryHub->expects('captureException')->never();
+    } else {
+        $sentryHub->expects('captureException')->once()
+            ->andReturnUsing(function (SomethingGoesWrongException $e): void {
+                expect($e->getMessage())->toBe('Something goes wrong');
+            })
+        ;
+    }
+
+    $this->getContainer()->get(OnWorkerMessageFailedEventListener::class)($event);
+})->with(function () {
+    $message = EnvelopeHelper::wrap(new TestMessage(TestConstants::DEFAULT_ID));
+    $exception = SomethingGoesWrongException::wrong();
+    $event = (new WorkerMessageFailedEvent($message, TestConstants::DEFAULT_RECEIVER_NAME, $exception));
+    $event->setForRetry();
+
+    yield 'with retry' => [
+        'event' => $event,
+    ];
+
+    yield 'without retry' => [
+        'event' => (new WorkerMessageFailedEvent($message, TestConstants::DEFAULT_RECEIVER_NAME, $exception)),
+    ];
+});
diff --git a/Tests/Feature/Kernel/EventListener/OnWorkerMessageHandledEventListenerTest.php b/Tests/Feature/Kernel/EventListener/OnWorkerMessageHandledEventListenerTest.php
new file mode 100644
index 0000000..96adb82
--- /dev/null
+++ b/Tests/Feature/Kernel/EventListener/OnWorkerMessageHandledEventListenerTest.php
@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+
+namespace FRZB\Component\MetricsPower\Tests\Feature\Kernel\EventListener;
+
+use FRZB\Component\MetricsPower\EventListener\Sentry\OnWorkerMessageHandledEventListener;
+use FRZB\Component\MetricsPower\Helper\EnvelopeHelper;
+use FRZB\Component\MetricsPower\Tests\Stub\Exception\SomethingGoesWrongException;
+use FRZB\Component\MetricsPower\Tests\Stub\Message\TestMessage;
+use FRZB\Component\MetricsPower\Tests\Stub\TestConstants;
+use Sentry\ClientInterface;
+use Sentry\State\HubInterface;
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use Symfony\Component\Messenger\Event\WorkerMessageHandledEvent;
+
+uses(KernelTestCase::class);
+
+beforeEach(function (): void {
+    $this->ensureKernelShutdown();
+    $this->bootKernel();
+});
+
+test(sprintf('Sentry flushes on %s message handle', TestMessage::getShortName()), function (): void {
+    $hubClient = \Mockery::mock(ClientInterface::class);
+    $hubClient
+        ->expects('flush')
+        ->once()
+    ;
+
+    $sentryHub = \Mockery::mock(HubInterface::class);
+    $sentryHub->expects('getClient')
+        ->once()
+        ->andReturn($hubClient)
+    ;
+
+    $this->getContainer()->set(HubInterface::class, $sentryHub);
+    $exception = SomethingGoesWrongException::wrong();
+    $message = EnvelopeHelper::wrap(new TestMessage(TestConstants::DEFAULT_ID));
+    $event = new WorkerMessageHandledEvent($message, TestConstants::DEFAULT_RECEIVER_NAME);
+
+    $this->getContainer()->get(OnWorkerMessageHandledEventListener::class)($event);
+});
diff --git a/Tests/Feature/OptionResolver/OptionsResolverLocatorTest.php b/Tests/Feature/OptionResolver/OptionsResolverLocatorTest.php
new file mode 100644
index 0000000..d3c03f2
--- /dev/null
+++ b/Tests/Feature/OptionResolver/OptionsResolverLocatorTest.php
@@ -0,0 +1,106 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+
+namespace FRZB\Component\MetricsPower\Tests\Feature\OptionResolver;
+
+use FRZB\Component\MetricsPower\Attribute\OptionsInterface;
+use FRZB\Component\MetricsPower\Attribute\PrometheusOptions;
+use FRZB\Component\MetricsPower\Exception\MetricsRegistrationException;
+use FRZB\Component\MetricsPower\Helper\EnvelopeHelper;
+use FRZB\Component\MetricsPower\Helper\MetricalHelper;
+use FRZB\Component\MetricsPower\Logger\MetricsPowerLoggerInterface;
+use FRZB\Component\MetricsPower\OptionResolver\OptionResolverLocatorInterface;
+use FRZB\Component\MetricsPower\OptionResolver\Resolver\DefaultOptionResolver;
+use FRZB\Component\MetricsPower\OptionResolver\Resolver\PrometheusOptionResolver;
+use FRZB\Component\MetricsPower\Tests\Stub\Exception\SomethingGoesWrongException;
+use FRZB\Component\MetricsPower\Tests\Stub\TestConstants;
+use Prometheus\Counter;
+use Prometheus\Exception\MetricsRegistrationException as BaseMetricsRegistrationException;
+use Prometheus\RegistryInterface;
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use Symfony\Component\Messenger\Event\SendMessageToTransportsEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
+
+uses(KernelTestCase::class);
+
+beforeEach(function (): void {
+    $this->ensureKernelShutdown();
+    $this->bootKernel();
+});
+
+test('It returns correct OptionsResolver when default options provided', function (): void {
+    $message = createTestMessage();
+    $envelope = EnvelopeHelper::wrap($message);
+    $metrical = MetricalHelper::getFirstMetrical($message);
+    $event = new SendMessageToTransportsEvent($envelope, [TestConstants::DEFAULT_RECEIVER_NAME]);
+    $options = $metrical->options[0];
+
+    $counter = \Mockery::mock(Counter::class);
+    $counter->expects('inc')->once();
+    $registry = \Mockery::mock(RegistryInterface::class);
+    $registry->expects('getOrRegisterCounter')->once()->andReturn($counter);
+
+    $prometheusOptionResolver = new PrometheusOptionResolver(TestConstants::DEFAULT_NAMESPACE, $registry);
+    $this->getContainer()->set(PrometheusOptionResolver::class, $prometheusOptionResolver);
+
+    $this->getContainer()->get(OptionResolverLocatorInterface::class)->get($options)($event, $options);
+});
+
+test('It returns correct OptionsResolver with unknown options', function (): void {
+    $message = createTestMessage();
+    $envelope = EnvelopeHelper::wrap($message);
+    $metrical = MetricalHelper::getFirstMetrical($message);
+    $sendEvent = new SendMessageToTransportsEvent($envelope, [TestConstants::DEFAULT_RECEIVER_NAME]);
+    $failedEvent = new WorkerMessageFailedEvent($envelope, TestConstants::DEFAULT_RECEIVER_NAME, SomethingGoesWrongException::wrong());
+    $options = $metrical->options[0];
+
+    $logger = \Mockery::mock(MetricsPowerLoggerInterface::class);
+    $logger->expects('logInfo')->once();
+    $logger->expects('logError')->once();
+
+    $defaultOptionResolver = new DefaultOptionResolver($logger);
+    $this->getContainer()->set(PrometheusOptionResolver::class, $defaultOptionResolver);
+
+    $this->getContainer()->get(OptionResolverLocatorInterface::class)->get($options)($sendEvent, $options);
+    $defaultOptionResolver = $this->getContainer()->get(OptionResolverLocatorInterface::class)->get($options);
+    $defaultOptionResolver($failedEvent, $options);
+
+    expect()
+        ->and($defaultOptionResolver)->toBeInstanceOf(DefaultOptionResolver::class)
+        ->and($defaultOptionResolver::getType())->toBe(OptionsInterface::class)
+    ;
+});
+
+test('It throws MetricsRegistrationException when something goes wrong', function (): void {
+    $message = createTestMessage();
+    $envelope = EnvelopeHelper::wrap($message);
+    $metrical = MetricalHelper::getFirstMetrical($message);
+    $event = new SendMessageToTransportsEvent($envelope, [TestConstants::DEFAULT_RECEIVER_NAME]);
+    $options = $metrical->options[0];
+
+    $registry = \Mockery::mock(RegistryInterface::class);
+    $registry->expects('getOrRegisterCounter')
+        ->once()
+        ->andThrow(new BaseMetricsRegistrationException('something goes wrong'))
+    ;
+
+    $this->getContainer()->set(PrometheusOptionResolver::class, new PrometheusOptionResolver(TestConstants::DEFAULT_NAMESPACE, $registry));
+    $prometheusOptionResolver = $this->getContainer()->get(OptionResolverLocatorInterface::class)->get($options)($event, $options);
+
+    expect()
+        ->and($prometheusOptionResolver)->toBeInstanceOf(PrometheusOptionResolver::class)
+        ->and($prometheusOptionResolver::getType())->toBe(PrometheusOptions::class)
+    ;
+})->throws(MetricsRegistrationException::class);
diff --git a/Tests/Pest.php b/Tests/Pest.php
new file mode 100644
index 0000000..775bdb2
--- /dev/null
+++ b/Tests/Pest.php
@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+use FRZB\Component\MetricsPower\Helper\EnvelopeHelper;
+use FRZB\Component\MetricsPower\Tests\Stub\Message\TestMessage;
+use FRZB\Component\MetricsPower\Tests\Stub\TestConstants;
+use Mockery\LegacyMockInterface;
+use Mockery\MockInterface;
+use Sentry\State\HubInterface;
+use Symfony\Component\Messenger\Envelope;
+
+// uses(KernelTestCase::class)->in('Feature');
+
+/*
+|--------------------------------------------------------------------------
+| Expectations
+|--------------------------------------------------------------------------
+|
+| When you're writing tests, you often need to check that values meet certain conditions. The
+| "expect()" function gives you access to a set of "expectations" methods that you can use
+| to assert different things. Of course, you may extend the Expectation API at any time.
+|
+*/
+
+// expect()->extend('toBeOne', fn () => $this->toBe(1));
+
+/*
+|--------------------------------------------------------------------------
+| Functions
+|--------------------------------------------------------------------------
+|
+| While Pest is very powerful out-of-the-box, you may have some testing code specific to your
+| project that you don't want to repeat in every file. Here you can also expose helpers as
+| global functions to help you to reduce the number of lines of code in your test files.
+|
+*/
+
+function getSentryHub(): HubInterface|LegacyMockInterface|MockInterface
+{
+    return \Mockery::mock(HubInterface::class);
+}
+
+function createTestMessage(): TestMessage
+{
+    return new TestMessage(TestConstants::DEFAULT_ID);
+}
+
+/** @return Envelope<TestMessage> */
+function createTestEnvelope(): Envelope
+{
+    return EnvelopeHelper::wrap(createTestMessage());
+}
diff --git a/Tests/Stub/Exception/SomethingGoesWrongException.php b/Tests/Stub/Exception/SomethingGoesWrongException.php
new file mode 100644
index 0000000..67047fd
--- /dev/null
+++ b/Tests/Stub/Exception/SomethingGoesWrongException.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+
+namespace FRZB\Component\MetricsPower\Tests\Stub\Exception;
+
+use FRZB\Component\MetricsPower\Exception\MetricsPowerException;
+
+/** @internal */
+final class SomethingGoesWrongException extends MetricsPowerException
+{
+    private const MESSAGE_SOMETHING_GOES_WRONG = 'Something goes wrong';
+
+    public static function wrong(?\Throwable $previous = null): self
+    {
+        return new self(self::MESSAGE_SOMETHING_GOES_WRONG, previous: $previous);
+    }
+}
diff --git a/Tests/Stub/Kernel.php b/Tests/Stub/Kernel.php
new file mode 100644
index 0000000..4f62f02
--- /dev/null
+++ b/Tests/Stub/Kernel.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+
+namespace FRZB\Component\MetricsPower\Tests\Stub;
+
+use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
+use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+use Symfony\Component\HttpKernel\Kernel as BaseKernel;
+
+/**
+ * @internal
+ */
+class Kernel extends BaseKernel
+{
+    use MicroKernelTrait;
+
+    protected function configureContainer(ContainerConfigurator $container): void
+    {
+        $container->import("{$this->getConfigDir()}/{packages}/*.yaml");
+        $container->import("{$this->getConfigDir()}/{packages}/{$this->environment}/*.yaml");
+
+        $container->import("{$this->getConfigDir()}/config/services.yaml");
+        $container->import("{$this->getConfigDir()}/config/{services}_{$this->environment}.yaml");
+    }
+
+    private function getConfigDir(): string
+    {
+        return "{$this->getProjectDir()}/Resources";
+    }
+}
diff --git a/Tests/Stub/Message/TestMessage.php b/Tests/Stub/Message/TestMessage.php
new file mode 100644
index 0000000..2d17060
--- /dev/null
+++ b/Tests/Stub/Message/TestMessage.php
@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+
+namespace FRZB\Component\MetricsPower\Tests\Stub\Message;
+
+use FRZB\Component\MetricsPower\Attribute\Metrical;
+use FRZB\Component\MetricsPower\Attribute\PrometheusOptions;
+use FRZB\Component\MetricsPower\Tests\Stub\TestConstants;
+
+#[Metrical(
+    new PrometheusOptions(
+        TestConstants::DEFAULT_RECEIVER_NAME,
+        'prometheus-default-options',
+        'Total of test value',
+        ['name'],
+        ['TestMessage']
+    ),
+)]
+class TestMessage
+{
+    public function __construct(
+        public readonly string $id,
+    ) {}
+
+    public static function getShortName(): string
+    {
+        return (new \ReflectionClass(self::class))->getShortName();
+    }
+}
diff --git a/Tests/Stub/TestConstants.php b/Tests/Stub/TestConstants.php
new file mode 100644
index 0000000..7e2659e
--- /dev/null
+++ b/Tests/Stub/TestConstants.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+
+namespace FRZB\Component\MetricsPower\Tests\Stub;
+
+interface TestConstants
+{
+    public const DEFAULT_ID = 'ID-1234';
+    public const DEFAULT_RECEIVER_NAME = 'test-receiver';
+    public const DEFAULT_NAMESPACE = 'test-namespace';
+}
diff --git a/Tests/Unit/Helper/AttributeHelperTest.php b/Tests/Unit/Helper/AttributeHelperTest.php
deleted file mode 100644
index c26ba52..0000000
--- a/Tests/Unit/Helper/AttributeHelperTest.php
+++ /dev/null
@@ -1,96 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- *
- * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
- *
- * For the full copyright and license information, please view the LICENSE.MD
- * file that was distributed with this source code.
- */
-
-namespace FRZB\Component\MetricsPower\Tests\Unit\Helper;
-
-use FRZB\Component\MetricsPower\Attribute\Transactional;
-use FRZB\Component\MetricsPower\Helper\AttributeHelper;
-use FRZB\Component\MetricsPower\Helper\ClassHelper;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\ExtendedTransactionalMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\NonTransactionalMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnHandledMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnResponseMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnTerminateMessage;
-use PHPUnit\Framework\Attributes\DataProvider;
-use PHPUnit\Framework\Attributes\Group;
-use PHPUnit\Framework\TestCase;
-
-/** @iternal */
-#[Group('transactional-messenger')]
-final class AttributeHelperTest extends TestCase
-{
-    #[DataProvider('dataProvider')]
-    public function testGetAttributesMethod(string $className, bool $hasAttributes): void
-    {
-        $hasAttributes
-            ? self::assertNotEmpty(AttributeHelper::getAttributes($className, Transactional::class))
-            : self::assertEmpty(AttributeHelper::getAttributes($className, Transactional::class));
-    }
-
-    #[DataProvider('dataProvider')]
-    public function testGetAttributeMethod(string $className, bool $hasAttributes): void
-    {
-        $hasAttributes
-            ? self::assertNotNull(AttributeHelper::getAttribute($className, Transactional::class))
-            : self::assertNull(AttributeHelper::getAttribute($className, Transactional::class));
-    }
-
-    #[DataProvider('dataProvider')]
-    public function testGetReflectionAttributesMethod(string $className, bool $hasAttributes): void
-    {
-        $hasAttributes
-            ? self::assertNotEmpty(AttributeHelper::getReflectionAttributes($className, Transactional::class))
-            : self::assertEmpty(AttributeHelper::getReflectionAttributes($className, Transactional::class));
-    }
-
-    #[DataProvider('dataProvider')]
-    public function testHasAttributeMethod(string $className, bool $hasAttributes): void
-    {
-        self::assertSame($hasAttributes, AttributeHelper::hasAttribute($className, Transactional::class));
-    }
-
-    public function dataProvider(): iterable
-    {
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
-            'class_name' => TransactionalOnTerminateMessage::class,
-            'has_attributes' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
-            'class_name' => TransactionalOnResponseMessage::class,
-            'has_attributes' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
-            'class_name' => TransactionalOnHandledMessage::class,
-            'has_attributes' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(ExtendedTransactionalMessage::class)) => [
-            'class_name' => ExtendedTransactionalMessage::class,
-            'has_attributes' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
-            'class_name' => NonTransactionalMessage::class,
-            'has_attributes' => false,
-        ];
-
-        yield 'InvalidClassName' => [
-            'class_name' => 'InvalidClassName',
-            'has_attributes' => false,
-        ];
-    }
-}
diff --git a/Tests/Unit/Helper/ClassHelperTest.php b/Tests/Unit/Helper/ClassHelperTest.php
deleted file mode 100644
index 9a57d49..0000000
--- a/Tests/Unit/Helper/ClassHelperTest.php
+++ /dev/null
@@ -1,189 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- *
- * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
- *
- * For the full copyright and license information, please view the LICENSE.MD
- * file that was distributed with this source code.
- */
-
-namespace FRZB\Component\MetricsPower\Tests\Unit\Helper;
-
-use FRZB\Component\MetricsPower\Attribute\Transactional;
-use FRZB\Component\MetricsPower\Helper\ClassHelper;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\ExtendedTransactionalMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\NonTransactionalMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnHandledMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnResponseMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnTerminateMessage;
-use PHPUnit\Framework\Attributes\DataProvider;
-use PHPUnit\Framework\Attributes\Group;
-use PHPUnit\Framework\TestCase;
-
-/** @iternal */
-#[Group('transactional-messenger')]
-final class ClassHelperTest extends TestCase
-{
-    #[DataProvider('shortNameProvider')]
-    public function testGetShortNameMethod(string $className, string $shortClassName): void
-    {
-        self::assertSame($shortClassName, ClassHelper::getShortName($className));
-    }
-
-    #[DataProvider('reflectionProvider')]
-    public function testGetReflectionClassMethod(string $className, bool $isNull): void
-    {
-        $isNull
-            ? self::assertNull(ClassHelper::getReflectionClass($className))
-            : self::assertNotNull(ClassHelper::getReflectionClass($className));
-    }
-
-    #[DataProvider('parentReflectionProvider')]
-    public function testGetParentReflectionClassMethod(string $className, bool $isNull): void
-    {
-        $isNull
-            ? self::assertNull(ClassHelper::getParentReflectionClass($className))
-            : self::assertNotNull(ClassHelper::getParentReflectionClass($className));
-    }
-
-    #[DataProvider('reflectionAttributesProvider')]
-    public function testGetReflectionAttributesClassMethod(string $className, bool $isEmpty): void
-    {
-        $isEmpty
-            ? self::assertEmpty(ClassHelper::getReflectionAttributes($className, Transactional::class))
-            : self::assertNotEmpty(ClassHelper::getReflectionAttributes($className, Transactional::class));
-    }
-
-    public function shortNameProvider(): iterable
-    {
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
-            'class_name' => TransactionalOnTerminateMessage::class,
-            'short_class_name' => 'TransactionalOnTerminateMessage',
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
-            'class_name' => TransactionalOnResponseMessage::class,
-            'short_class_name' => 'TransactionalOnResponseMessage',
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
-            'class_name' => TransactionalOnHandledMessage::class,
-            'short_class_name' => 'TransactionalOnHandledMessage',
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
-            'class_name' => NonTransactionalMessage::class,
-            'short_class_name' => 'NonTransactionalMessage',
-        ];
-
-        yield 'InvalidClassName' => [
-            'class_name' => 'InvalidClassName',
-            'short_class_name' => 'InvalidClassName',
-        ];
-    }
-
-    public function reflectionProvider(): iterable
-    {
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
-            'class_name' => TransactionalOnTerminateMessage::class,
-            'is_null' => false,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
-            'class_name' => TransactionalOnResponseMessage::class,
-            'is_null' => false,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
-            'class_name' => TransactionalOnHandledMessage::class,
-            'is_null' => false,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(ExtendedTransactionalMessage::class)) => [
-            'class_name' => ExtendedTransactionalMessage::class,
-            'is_null' => false,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
-            'class_name' => NonTransactionalMessage::class,
-            'is_null' => false,
-        ];
-
-        yield 'InvalidClassName' => [
-            'class_name' => 'InvalidClassName',
-            'is_null' => true,
-        ];
-    }
-
-    public function parentReflectionProvider(): iterable
-    {
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
-            'class_name' => TransactionalOnTerminateMessage::class,
-            'is_null' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
-            'class_name' => TransactionalOnResponseMessage::class,
-            'is_null' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
-            'class_name' => TransactionalOnHandledMessage::class,
-            'is_null' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(ExtendedTransactionalMessage::class)) => [
-            'class_name' => ExtendedTransactionalMessage::class,
-            'is_null' => false,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
-            'class_name' => NonTransactionalMessage::class,
-            'is_null' => true,
-        ];
-
-        yield 'InvalidClassName' => [
-            'class_name' => 'InvalidClassName',
-            'is_null' => true,
-        ];
-    }
-
-    public function reflectionAttributesProvider(): iterable
-    {
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
-            'class_name' => TransactionalOnTerminateMessage::class,
-            'is_empty' => false,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
-            'class_name' => TransactionalOnResponseMessage::class,
-            'is_empty' => false,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
-            'class_name' => TransactionalOnHandledMessage::class,
-            'is_empty' => false,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(ExtendedTransactionalMessage::class)) => [
-            'class_name' => ExtendedTransactionalMessage::class,
-            'is_empty' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
-            'class_name' => NonTransactionalMessage::class,
-            'is_empty' => true,
-        ];
-
-        yield 'InvalidClassName' => [
-            'class_name' => 'InvalidClassName',
-            'is_empty' => true,
-        ];
-    }
-}
diff --git a/Tests/Unit/Helper/EnvelopeHelperTest.php b/Tests/Unit/Helper/EnvelopeHelperTest.php
deleted file mode 100644
index e687acc..0000000
--- a/Tests/Unit/Helper/EnvelopeHelperTest.php
+++ /dev/null
@@ -1,54 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- *
- * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
- *
- * For the full copyright and license information, please view the LICENSE.MD
- * file that was distributed with this source code.
- */
-
-namespace FRZB\Component\MetricsPower\Tests\Unit\Helper;
-
-use FRZB\Component\MetricsPower\Helper\ClassHelper;
-use FRZB\Component\MetricsPower\Helper\EnvelopeHelper;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnTerminateMessage;
-use PHPUnit\Framework\Attributes\DataProvider;
-use PHPUnit\Framework\Attributes\Group;
-use PHPUnit\Framework\TestCase;
-use Symfony\Component\Messenger\Envelope;
-use Symfony\Component\Messenger\Stamp\DispatchAfterCurrentBusStamp;
-
-/** @iternal */
-#[Group('transactional-messenger')]
-final class EnvelopeHelperTest extends TestCase
-{
-    #[DataProvider('dataProvider')]
-    public function testWrapMethod(object $target): void
-    {
-        $envelope = EnvelopeHelper::wrap($target);
-        $messageClass = $envelope->getMessage()::class;
-
-        self::assertInstanceOf(Envelope::class, $envelope);
-        self::assertSame($messageClass, $envelope->getMessage()::class);
-        self::assertNotNull($envelope->last(DispatchAfterCurrentBusStamp::class));
-    }
-
-    public function dataProvider(): iterable
-    {
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
-            'target' => new TransactionalOnTerminateMessage(),
-            'has_attributes' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(Envelope::class)) => [
-            'target' => Envelope::wrap(new TransactionalOnTerminateMessage()),
-            'has_attributes' => false,
-        ];
-    }
-}
diff --git a/Tests/Unit/Helper/TransactionHelperTest.php b/Tests/Unit/Helper/TransactionHelperTest.php
deleted file mode 100644
index 7039d36..0000000
--- a/Tests/Unit/Helper/TransactionHelperTest.php
+++ /dev/null
@@ -1,143 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/**
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- *
- * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
- *
- * For the full copyright and license information, please view the LICENSE.MD
- * file that was distributed with this source code.
- */
-
-namespace FRZB\Component\MetricsPower\Tests\Unit\Helper;
-
-use FRZB\Component\MetricsPower\Enum\CommitType;
-use FRZB\Component\MetricsPower\Helper\ClassHelper;
-use FRZB\Component\MetricsPower\Helper\MetricalHelper;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\NonTransactionalMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnHandledMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnResponseMessage;
-use FRZB\Component\MetricsPower\Tests\Stub\Message\TransactionalOnTerminateMessage;
-use PHPUnit\Framework\Attributes\DataProvider;
-use PHPUnit\Framework\Attributes\Group;
-use PHPUnit\Framework\TestCase;
-
-/** @iternal */
-#[Group('transactional-messenger')]
-final class TransactionHelperTest extends TestCase
-{
-    #[DataProvider('transactionalProvider')]
-    public function testIsTransactionalMethod(string $className, bool $isTransactional): void
-    {
-        self::assertSame($isTransactional, MetricalHelper::isMetrical($className));
-    }
-
-    #[DataProvider('transactionalDataProvider')]
-    public function getTransactionalMethod(string $className, bool $isTransactional): void
-    {
-        $isTransactional
-            ? self::assertNotEmpty(MetricalHelper::getMetrical($className))
-            : self::assertEmpty(MetricalHelper::getMetrical($className));
-    }
-
-    #[DataProvider('dispatchableProvider')]
-    public function getIsDispatchableMethod(string $className, bool $isAllowed, array $commitTypes): void
-    {
-        self::assertSame($isAllowed, MetricalHelper::isDispatchable($className, ...$commitTypes));
-    }
-
-    public function transactionalProvider(): iterable
-    {
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
-            'class_name' => TransactionalOnTerminateMessage::class,
-            'is_transactional' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
-            'class_name' => TransactionalOnResponseMessage::class,
-            'is_transactional' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
-            'class_name' => TransactionalOnHandledMessage::class,
-            'is_transactional' => true,
-        ];
-
-        yield sprintf('%s', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
-            'class_name' => NonTransactionalMessage::class,
-            'is_transactional' => false,
-        ];
-
-        yield 'InvalidClassName' => [
-            'class_name' => 'InvalidClassName',
-            'is_transactional' => false,
-        ];
-    }
-
-    public function dispatchableProvider(): iterable
-    {
-        yield sprintf('%s is allowed', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
-            'class_name' => TransactionalOnTerminateMessage::class,
-            'is_allowed' => true,
-            'commit_types' => [
-                CommitType::OnTerminate,
-            ],
-        ];
-
-        yield sprintf('%s is allowed', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
-            'class_name' => TransactionalOnResponseMessage::class,
-            'is_allowed' => true,
-            'commit_types' => [
-                CommitType::OnResponse,
-            ],
-        ];
-
-        yield sprintf('%s is allowed', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
-            'class_name' => TransactionalOnHandledMessage::class,
-            'is_allowed' => true,
-            'commit_types' => [
-                CommitType::OnHandled,
-            ],
-        ];
-
-        yield sprintf('%s is not allowed', ClassHelper::getShortName(TransactionalOnTerminateMessage::class)) => [
-            'class_name' => TransactionalOnTerminateMessage::class,
-            'is_allowed' => false,
-            'commit_types' => [
-                CommitType::OnResponse,
-            ],
-        ];
-
-        yield sprintf('%s is not allowed', ClassHelper::getShortName(TransactionalOnResponseMessage::class)) => [
-            'class_name' => TransactionalOnResponseMessage::class,
-            'is_allowed' => false,
-            'commit_types' => [
-                CommitType::OnTerminate,
-            ],
-        ];
-
-        yield sprintf('%s is not allowed', ClassHelper::getShortName(TransactionalOnHandledMessage::class)) => [
-            'class_name' => TransactionalOnHandledMessage::class,
-            'is_allowed' => false,
-            'commit_types' => [
-                CommitType::OnTerminate,
-            ],
-        ];
-
-        yield sprintf('%s is not allowed', ClassHelper::getShortName(NonTransactionalMessage::class)) => [
-            'class_name' => NonTransactionalMessage::class,
-            'is_allowed' => false,
-            'commit_types' => [],
-        ];
-
-        yield 'InvalidClassName is not allowed' => [
-            'class_name' => 'InvalidClassName',
-            'is_allowed' => false,
-            'commit_types' => [],
-        ];
-    }
-}
diff --git a/Tests/Unit/OptionResolver/Resolver/PrometheusOptionResolverTest.php b/Tests/Unit/OptionResolver/Resolver/PrometheusOptionResolverTest.php
new file mode 100644
index 0000000..c06057f
--- /dev/null
+++ b/Tests/Unit/OptionResolver/Resolver/PrometheusOptionResolverTest.php
@@ -0,0 +1,99 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+
+namespace FRZB\Component\MetricsPower\Tests\Unit\OptionResolver;
+
+use FRZB\Component\MetricsPower\Attribute\PrometheusOptions;
+use FRZB\Component\MetricsPower\Exception\MetricsRegistrationException;
+use FRZB\Component\MetricsPower\OptionResolver\Resolver\PrometheusOptionResolver;
+use FRZB\Component\MetricsPower\Tests\Stub\Exception\SomethingGoesWrongException;
+use FRZB\Component\MetricsPower\Tests\Stub\TestConstants;
+use Prometheus\Counter;
+use Prometheus\Exception\MetricsRegistrationException as BaseMetricsRegistrationException;
+use Prometheus\RegistryInterface;
+use Symfony\Component\Messenger\Event\AbstractWorkerMessageEvent;
+use Symfony\Component\Messenger\Event\SendMessageToTransportsEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageHandledEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageReceivedEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageRetriedEvent;
+
+test('It can make needed counter name', function (string $counterName, AbstractWorkerMessageEvent|SendMessageToTransportsEvent $event, bool $throws = false): void {
+    $counter = \Mockery::mock(Counter::class);
+    $registry = \Mockery::mock(RegistryInterface::class);
+    $options = new PrometheusOptions(TestConstants::DEFAULT_RECEIVER_NAME, 'test-name', 'test-help', ['type'], ['TestMessage']);
+
+    $prometheusOptionResolver = new PrometheusOptionResolver(TestConstants::DEFAULT_NAMESPACE, $registry);
+
+    if ($throws) {
+        $registry->expects('getOrRegisterCounter')
+            ->once()
+            ->andThrow(new BaseMetricsRegistrationException('something goes wrong'))
+        ;
+    } else {
+        $counter->expects('inc')->once();
+        $registry->expects('getOrRegisterCounter')->once()
+            ->andReturnUsing(function (string $namespace, string $name, string $help, array $labels = []) use ($counter, $counterName) {
+                expect()
+                    ->and($namespace)->toBe(TestConstants::DEFAULT_NAMESPACE)
+                    ->and($name)->toBe($counterName)
+                    ->and($help)->toBe('test-help')
+                    ->and($labels)->toBe(['type'])
+                ;
+
+                return $counter;
+            })
+        ;
+    }
+
+    try {
+        $prometheusOptionResolver($event, $options);
+    } catch (MetricsRegistrationException $e) {
+        expect($e->getMessage())->toBe('something goes wrong');
+    }
+})->with(function () {
+    $envelope = createTestEnvelope();
+
+    yield WorkerMessageHandledEvent::class => [
+        'counter_name' => 'test_receiver_test_name_handled',
+        'event' => new WorkerMessageHandledEvent($envelope, TestConstants::DEFAULT_RECEIVER_NAME),
+    ];
+
+    yield WorkerMessageReceivedEvent::class => [
+        'counter_name' => 'test_receiver_test_name_received',
+        'event' => new WorkerMessageReceivedEvent($envelope, TestConstants::DEFAULT_RECEIVER_NAME),
+    ];
+
+    yield WorkerMessageRetriedEvent::class => [
+        'counter_name' => 'test_receiver_test_name_retried',
+        'event' => new WorkerMessageRetriedEvent($envelope, TestConstants::DEFAULT_RECEIVER_NAME),
+    ];
+
+    yield WorkerMessageFailedEvent::class => [
+        'counter_name' => 'test_receiver_test_name_failed',
+        'event' => new WorkerMessageFailedEvent($envelope, TestConstants::DEFAULT_RECEIVER_NAME, SomethingGoesWrongException::wrong()),
+    ];
+
+    yield SendMessageToTransportsEvent::class => [
+        'counter_name' => 'test_receiver_test_name_sent',
+        'event' => new SendMessageToTransportsEvent($envelope, [TestConstants::DEFAULT_RECEIVER_NAME]),
+    ];
+
+    yield sprintf('%s with exception', WorkerMessageFailedEvent::class) => [
+        'counter_name' => 'test_receiver_test_name_failed',
+        'event' => new WorkerMessageFailedEvent($envelope, TestConstants::DEFAULT_RECEIVER_NAME, SomethingGoesWrongException::wrong()),
+        'throws' => true,
+    ];
+});
diff --git a/Tests/Unit/OptionResolver/Resolver/SentryOptionResolverTest.php b/Tests/Unit/OptionResolver/Resolver/SentryOptionResolverTest.php
new file mode 100644
index 0000000..7a451f9
--- /dev/null
+++ b/Tests/Unit/OptionResolver/Resolver/SentryOptionResolverTest.php
@@ -0,0 +1,82 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ *
+ * Copyright (c) 2024 Mykhailo Shtanko fractalzombie@gmail.com
+ *
+ * For the full copyright and license information, please view the LICENSE.MD
+ * file that was distributed with this source code.
+ */
+
+namespace FRZB\Component\MetricsPower\Tests\Unit\OptionResolver;
+
+use FRZB\Component\MetricsPower\Attribute\SentryOptions;
+use FRZB\Component\MetricsPower\OptionResolver\Resolver\SentryOptionResolver;
+use FRZB\Component\MetricsPower\Tests\Stub\Exception\SomethingGoesWrongException;
+use FRZB\Component\MetricsPower\Tests\Stub\TestConstants;
+use Sentry\ClientInterface;
+use Sentry\State\HubInterface;
+use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
+use Symfony\Component\Messenger\Event\WorkerMessageHandledEvent;
+
+test('It can capture exception when not set for retry', function (): void {
+    $sentryHub = \Mockery::mock(HubInterface::class);
+    $sentryOptionsResolver = new SentryOptionResolver($sentryHub);
+    $envelope = createTestEnvelope();
+    $event = new WorkerMessageFailedEvent($envelope, TestConstants::DEFAULT_RECEIVER_NAME, SomethingGoesWrongException::wrong());
+    $options = new SentryOptions();
+
+    $sentryHub
+        ->expects('captureException')
+        ->once()
+    ;
+
+    $sentryOptionsResolver($event, $options);
+});
+
+test('It can capture exception when set for retry', function (): void {
+    $sentryHub = \Mockery::mock(HubInterface::class);
+    $sentryOptionsResolver = new SentryOptionResolver($sentryHub);
+    $envelope = createTestEnvelope();
+    $event = new WorkerMessageFailedEvent($envelope, TestConstants::DEFAULT_RECEIVER_NAME, SomethingGoesWrongException::wrong());
+    $options = new SentryOptions();
+
+    $event->setForRetry();
+
+    $sentryHub
+        ->expects('captureException')
+        ->never()
+    ;
+
+    $sentryOptionsResolver($event, $options);
+});
+
+test('It can flush when handled', function (): void {
+    $hubClient = \Mockery::mock(ClientInterface::class);
+    $sentryHub = \Mockery::mock(HubInterface::class);
+    $sentryOptionsResolver = new SentryOptionResolver($sentryHub);
+    $envelope = createTestEnvelope();
+    $event = new WorkerMessageHandledEvent($envelope, TestConstants::DEFAULT_RECEIVER_NAME);
+    $options = new SentryOptions();
+
+    $hubClient
+        ->expects('flush')
+        ->once()
+    ;
+
+    $sentryHub->expects('getClient')
+        ->once()
+        ->andReturn($hubClient)
+    ;
+
+    $sentryOptionsResolver($event, $options);
+});
+
+test('It has correct type', function (): void {
+    expect(SentryOptionResolver::getType())->toBe(SentryOptions::class);
+});
diff --git a/Tests/Unit/Resources/BundlesTest.php b/Tests/Unit/Resources/BundlesTest.php
index 371c1dd..b4313c4 100644
--- a/Tests/Unit/Resources/BundlesTest.php
+++ b/Tests/Unit/Resources/BundlesTest.php
@@ -17,22 +17,15 @@
 
 use FRZB\Component\DependencyInjection\DependencyInjectionBundle;
 use FRZB\Component\MetricsPower\MetricsPowerBundle;
-use PHPUnit\Framework\Attributes\Group;
-use PHPUnit\Framework\TestCase;
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
 
-#[Group('transactional-messenger')]
-class BundlesTest extends TestCase
-{
-    public function testConfiguredBundles(): void
-    {
-        $bundles = require __DIR__.'/../../../Resources/bundles.php';
-        $expectedBundles = [
-            FrameworkBundle::class => ['all' => true],
-            DependencyInjectionBundle::class => ['all' => true],
-            MetricsPowerBundle::class => ['all' => true],
-        ];
+it('Has all dependencies in bundles.php', function (): void {
+    $bundles = require __DIR__.'/../../../Resources/bundles.php';
+    $expectedBundles = [
+        FrameworkBundle::class => ['all' => true],
+        DependencyInjectionBundle::class => ['all' => true],
+        MetricsPowerBundle::class => ['all' => true],
+    ];
 
-        self::assertSame($expectedBundles, $bundles);
-    }
-}
+    expect($expectedBundles)->toBe($bundles);
+});
diff --git a/composer.json b/composer.json
index c80e9f1..b199bc8 100644
--- a/composer.json
+++ b/composer.json
@@ -33,26 +33,33 @@
         "sentry/sdk": "^4.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^11.0",
+        "phpunit/phpunit": "^10.5",
         "symfony/phpunit-bridge": "^6|^7",
-        "friendsofphp/php-cs-fixer": "^v3.52"
+        "friendsofphp/php-cs-fixer": "^v3.52",
+        "pestphp/pest": "^2.34",
+        "mockery/mockery": "^1.6"
     },
     "autoload": {
         "psr-4": {
             "FRZB\\Component\\MetricsPower\\": ""
-        },
-        "exclude-from-classmap": [
-            "/lib/metrics-power/Tests/"
-        ]
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "FRZB\\Component\\MetricsPower\\Tests\\": "Tests/"
+        }
     },
     "extra": {
         "symfony": {
             "allow-contrib": false,
-            "require": "5.4.*||6.0.*||6.1.*||6.2.*"
-        },
-        "src-dir": "./",
-        "config-dir": "Resources/"
+            "require": "^6.0||^7.0"
+        }
     },
     "minimum-stability": "dev",
-    "prefer-stable": true
+    "prefer-stable": true,
+    "config": {
+        "allow-plugins": {
+            "pestphp/pest-plugin": true
+        }
+    }
 }
diff --git a/docker-compose.yml b/docker-compose.yml
index bfd0797..4452b1b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -2,7 +2,16 @@ version: '3.8'
 
 services:
   php:
-    build: .docker/php
+    build:
+      dockerfile: $PWD/.docker/php/cli/Dockerfile
+      context: $PWD/.docker/php/cli
+      args:
+        VERSION_PHP: 8.2
+        USER_ID: 1000
+        GROUP_ID: 1000
+        USER_NAME: fractal
+        GROUP_NAME: fractal
+    command: sleep infinity
     env_file:
       - '.env'
     volumes:
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index c865a3a..e5227d5 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- https://phpunit.readthedocs.io/en/latest/configuration.html -->
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.0/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd"
+         bootstrap="Tests/Pest.php"
          colors="true"
          failOnRisky="true"
          failOnWarning="true"
@@ -17,33 +17,38 @@
         <server name="SYMFONY_PHPUNIT_VERSION" value="9.5"/>
         <env name="SYMFONY_DEPRECATIONS_HELPER" value="weak"/>
         <env name="TEST_ENVIRONMENT" value="TEST_VALUE"/>
+        <env name="SENTRY_DSN" value="https://sentry.io"/>
+        <env name="SENTRY_ENVIRONMENT" value="test"/>
+        <env name="SENTRY_TRACES_SAMPLE_RATE" value="0"/>
+        <env name="SENTRY_PROFILE_SAMPLE_RATE" value="0"/>
+        <env name="PROMETHEUS_NAMESPACE" value="test_unblocker"/>
+        <env name="PROMETHEUS_STORAGE" value="in-memory"/>
+        <env name="PROMETHEUS_REDIS_HOST" value="redis"/>
+        <env name="PROMETHEUS_REDIS_PORT" value="6379"/>
+        <env name="PROMETHEUS_REDIS_DATABASE" value="0"/>
+        <env name="PROMETHEUS_REDIS_TIMEOUT" value="10"/>
+        <env name="PROMETHEUS_REDIS_READ_TIMEOUT" value="10"/>
+        <env name="PROMETHEUS_REDIS_PERSISTENT_CONNECTIONS" value="false"/>
+        <env name="PROMETHEUS_REDIS_PASSWORD" value="secret"/>
+        <env name="PROMETHEUS_REDIS_URL" value="redis://redis"/>
     </php>
+
     <testsuites>
-        <testsuite name="Transactional MessageBus Component Unit Test Suite">
-            <directory>./Tests/Unit/</directory>
+        <testsuite name="Test Suite">
+            <directory suffix="Test.php">./Tests</directory>
         </testsuite>
     </testsuites>
-    <coverage>
+
+    <source>
         <include>
-            <directory suffix=".php">./</directory>
+            <directory  suffix=".php">./</directory>
         </include>
         <exclude>
-            <directory>./Tests</directory>
-            <directory>./Resources</directory>
-            <directory>./vendor</directory>
-            <directory>./var</directory>
-            <file>./.php-cs-fixer.dist.php</file>
-            <file>./TransactionalMessengerBundle.php</file>
-            <file>./TransactionalMessengerExtension.php</file>
+            <directory suffix=".php">./docker</directory>
+            <directory suffix=".php">./var</directory>
+            <directory suffix=".php">./vendor</directory>
+            <directory suffix=".php">./Resources</directory>
+            <directory suffix=".php">./Tests</directory>
         </exclude>
-        <report>
-            <clover outputFile="build/logs/clover.xml" />
-            <cobertura outputFile="build/logs/cobertura.xml"/>
-            <html outputDirectory="build/logs/html" />
-            <xml outputDirectory="build/logs/xml"/>
-        </report>
-    </coverage>
-    <logging>
-        <junit outputFile="build/logs/junit.xml"/>
-    </logging>
+    </source>
 </phpunit>
diff --git a/sonar-project.properties b/sonar-project.properties
new file mode 100644
index 0000000..41ee1d5
--- /dev/null
+++ b/sonar-project.properties
@@ -0,0 +1,11 @@
+sonar.projectKey=fractalzombie_frzb-metrics-power
+sonar.organization=fractalzombie
+sonar.projectName=frzb-metrics-power
+sonar.sources=Action,Attribute,DependencyInjection,Enum,EventListener,Exception,Factory,Handler,Helper,Logger,OptionResolver,Traits
+sonar.sourceEncoding=UTF-8
+sonar.tests=Tests
+sonar.exclusions=Resources/**,.docker/**,.github/**,vendor/**,Documentation/**
+sonar.php.coverage.reportPaths=tests-coverage.xml
+sonar.php.tests.reportPath=tests-execution.xml
+sonar.php.binaries=**/*.php
+verbose=true